"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : dbcompatibility-whale
Case Name   : 函数months_between按date1-date2的方式返回两个日期之间相差的月数
Create At   : 2023/12/26
Owner       : @zou_jialiang050
Description :
    1.函数months_between(date1 date, date2 date)按date1 - date2 的方式返回两个日期之间相差的月数
    2.函数months_between错参
    3.函数months_between多参
    4.函数months_between无参
    5.函数months_between少参
Expect      :
    1.成功
    2.失败
    3.失败
    4.失败
    5.失败
History     :
"""
import os
import unittest
from testcase.utils.Common import Common
from testcase.utils.CommonSH import CommonSH
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger


class Whale(unittest.TestCase):
    def setUp(self):
        self.logger = Logger()
        self.logger.info(f"-----{os.path.basename(__file__)} start-----")
        self.constant = Constant()
        self.common = Common()
        self.sh_primy = CommonSH('PrimaryDbUser')
        self.dbname = 'db_whale_89'
    
    def test_months_between(self):
        text = "---pre1:创建A兼容性数据库;expect:成功---"
        self.logger.info(text)
        pre_cmd1 = f"drop database if exists {self.dbname};" \
            f"create database {self.dbname} dbcompatibility='A';"
        pre_msg1 = self.sh_primy.execut_db_sql(pre_cmd1)
        self.logger.info(pre_msg1)
        self.assertIn(self.constant.CREATE_DATABASE_SUCCESS, pre_msg1,
                      text + '执行失败')
        text = "---pre2:在A数据库中创建whale插件;expect:成功---"
        self.logger.info(text)
        pre_cmd2 = f"create extension whale;"
        pre_msg2 = self.sh_primy.execut_db_sql(pre_cmd2, dbname=self.dbname)
        self.logger.info(pre_msg2)
        self.assertIn(self.constant.extension_create_success, pre_msg2,
                      text + '执行失败')
        
        text = "---step1:按date1-date2的方式返回两个日期之间相差;expect:成功---"
        self.logger.info(text)
        sql_cmd1_1 = f"select months_between(date'2023-01-01'," \
            f"date'2022-01-01');"
        msg1_1 = self.sh_primy.execut_db_sql(sql_cmd1_1, dbname=self.dbname)
        self.logger.info(msg1_1)
        self.common.equal_sql_mdg(msg1_1, 'months_between', '12',
                                  '(1 row)', flag='1')

        text = "---step2:函数months_between错参;expect:失败---"
        self.logger.info(text)
        sql_cmd2 = f"select months_between('test','test');"
        msg2 = self.sh_primy.execut_db_sql(sql_cmd2, dbname=self.dbname)
        self.logger.info(msg2)
        self.assertIn("invalid input syntax for type timestamp", msg2,
                      text + '执行失败')

        text = "---step3:函数months_between多参;expect:失败---"
        self.logger.info(text)
        sql_cmd3 = f"select months_between(date'2023-01-01'," \
            f"date'2021-01-01',date'2022-01-01');"
        msg3 = self.sh_primy.execut_db_sql(sql_cmd3, dbname=self.dbname)
        self.logger.info(msg3)
        self.assertIn("function months_between(timestamp without time zone, "
                      "timestamp without time zone, timestamp without time "
                      "zone) does not exist", msg3, text + '执行失败')

        text = "---step4:函数months_between无参;expect:失败---"
        self.logger.info(text)
        sql_cmd4 = f"select months_between();"
        msg4 = self.sh_primy.execut_db_sql(sql_cmd4, dbname=self.dbname)
        self.logger.info(msg4)
        self.assertIn("function months_between() does not exist", msg4,
                      text + '执行失败')

        text = "---step5:函数months_between少参;expect:失败---"
        self.logger.info(text)
        sql_cmd5 = f"select months_between(date'2023-01-01');"
        msg5 = self.sh_primy.execut_db_sql(sql_cmd5, dbname=self.dbname)
        self.logger.info(msg5)
        self.assertIn("function months_between(timestamp without time zone) "
                      "does not exist", msg5,
                      text + '执行失败')

    def tearDown(self):
        text = '----清理环境----'
        cl_cmd = f"drop database {self.dbname};"
        cl_msg = self.sh_primy.execut_db_sql(cl_cmd)
        self.logger.info(cl_msg)
        self.assertIn(self.constant.DROP_DATABASE_SUCCESS, cl_msg,
                      text + '执行失败')
        self.logger.info(f'-----{os.path.basename(__file__)} end-----')
